Characters in photo galvanised by what outfitters in Rome produced a long time ago (4)

I believe the answer is:

toga

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'outfitters in rome produced a long time ago' is the definition.
I can't tell whether this defines the answer.

'characters in photo galvanised by' is the wordplay.
'characters in' indicates a hidden word.
'TOGA' can be found hidden inside 'photo galvanised by'.

'what' is the link.

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(Other definitions for toga that I've seen before include "One-piece Roman wrap" , "Ancient Roman garment" , "Sheet draped round Roman" , "Robe for an ancient Roman" , "Roman clothing" .)

I've seen this clue in The Irish Times.

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